M. Mathews and J. O. Smith, ``Methods for synthesizing very high Q
parametrically well behaved two pole filters,'' in Proceedings of the Stockholm
Musical Acoustics Conference (SMAC-03),
http://www.speech.kth.se/smac03/,
(Stockholm), Royal Swedish Academy of Music, Aug. 2003,
available online, with sound examples, at
https://ccrma.stanford.edu/~jos/smac03maxjos/.

J. O. Smith, ``Introduction to digital filter theory,'' in Digital Audio
Signal Processing: An Anthology (J. Strawn, ed.), Los Altos, California:
William Kaufmann, Inc., 1985,
(out of print). Book reprint available from ICMA at
http://www.computermusic.org/.
Original version available as Stanford CCRMA Tech. Report STAN-M-20, April
1985. A shortened version appears in [71].

S. A. Van Duyne and J. O. Smith, ``Implementation of a variable pick-up point
on a waveguide string model with FM/AM applications,'' in Proceedings of the
1992 International Computer Music Conference, San Jose, pp. 154-157, Computer Music
Association, searchable at
http://quod.lib.umich.edu/i/icmc/,
1992.